Error configuring PHP for litespeed

I am attempting to configure PHP --with-xmlrpc for my site but not successful. I must admit, I have not been using PHP very long and it's a pain in the <you know what!>. Anyhow, I hope to get some help on this. I have a site running joomla. The site is currently running and I was successful in upgrading the PHP before, when I needed to configure a newer version of PHP. I am currently running PHP 5.3.6.